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Diverticular Disease

★ CMTO Exam Focus

Diverticular disease encompasses diverticulosis (the presence of small mucosal outpouchings, or diverticula, in the colon wall) and diverticulitis (inflammation or infection of those diverticula). Diverticulosis is extremely common in Western populations over 60 — affecting 50-70% — and is usually asymptomatic. Diverticulitis, however, can cause significant left lower quadrant (LLQ) abdominal pain and potentially life-threatening complications including perforation and peritonitis. Massage therapists must differentiate between the two because uncomplicated diverticulosis requires minimal modification, while acute diverticulitis contraindicates abdominal work entirely.

Populations and Risk Factors

  • Age over 60 (50-70% affected in Western populations)
  • Low-fiber, high-fat Western diets (most significant modifiable risk factor)
  • Obesity
  • Sedentary lifestyle
  • Smoking
  • Chronic constipation (increased intraluminal pressure)
  • NSAID and corticosteroid use (increase diverticulitis and perforation risk)
  • Connective tissue disorders (Marfan syndrome, Ehlers-Danlos syndrome) — weakened colonic wall

Causes and Pathophysiology

  • Diverticulosis formation: Low-fiber diets produce small, hard stool that increases intraluminal pressure during peristalsis. This elevated pressure pushes the mucosa and submucosa through weak points in the muscularis where vasa recta penetrate the bowel wall. The sigmoid colon is the most common location because it has the smallest diameter and highest intraluminal pressure.
  • Diverticulitis trigger: A fecalith (hardened stool particle) obstructs a diverticulum, creating a closed space where bacteria proliferate. This leads to mucosal erosion, inflammation, microperforation, or macroperforation of the diverticular wall.
  • Complications of diverticulitis:
  • Pericolic abscess (localized pus collection walled off by omentum)
  • Free perforation with generalized peritonitis (surgical emergency)
  • Fistula formation (colovesical — to bladder, causing pneumaturia; colovaginal — to vagina)
  • Stricture and obstruction from recurrent inflammation and scarring
  • Diverticular hemorrhage (painless, massive lower GI bleed from eroded vasa recta — distinct from diverticulitis)

Signs and Symptoms

  • Diverticulosis: Usually asymptomatic. May cause mild cramping, bloating, or altered bowel habits. Occasionally painless rectal bleeding
  • Diverticulitis: LLQ pain ("left-sided appendicitis"), fever, leukocytosis, nausea, vomiting, altered bowel habits (constipation or diarrhea)
  • LLQ tenderness and guarding on palpation
  • Palpable mass if abscess is present
  • Complicated diverticulitis: Severe abdominal pain with board-like rigidity (perforation), massive rectal bleeding, high fever

Red Flags

  • Peritoneal signs: Severe abdominal pain with rebound tenderness and board-like rigidity — perforation with peritonitis; surgical emergency; call 911
  • Massive rectal bleeding: Large-volume bright red blood per rectum — diverticular hemorrhage; emergency referral
  • High fever with LLQ pain: Indicates complicated diverticulitis (abscess or impending perforation) — urgent medical evaluation

MT Considerations

  • Diverticulosis (asymptomatic): Requires minimal modification. Gentle clockwise abdominal massage can promote motility and is safe. Relaxation massage supports stress management and bowel regularity.
  • Acute diverticulitis: Abdominal massage is absolutely contraindicated (risk of perforation). Do not massage over a palpable abdominal mass. Any peritoneal signs (severe pain, rigidity, rebound tenderness) require emergency referral — cease treatment immediately.
  • Known diverticulosis between flares: Use only light to moderate abdominal pressure in a clockwise direction. Avoid deep pressure over the sigmoid colon (LLQ specifically). If the client develops new LLQ pain with fever, stop abdominal work and refer.
  • Positioning: No specific positioning restrictions for uncomplicated diverticulosis. During mild episodes, prone positioning may be uncomfortable — use side-lying.
  • Wellness counseling: Encourage adequate fiber and fluid intake as part of general wellness conversation

CMTO Exam Relevance

  • Category: A7 Systemic Conditions — Digestive
  • Differentiate diverticulosis (benign, common, minimal modification) from diverticulitis (medical condition, abdominal massage contraindicated)
  • LLQ pain with fever in an elderly client should raise suspicion for diverticulitis
  • Perforation with peritonitis is a surgical emergency — rebound tenderness and abdominal rigidity are the key findings
  • "Left-sided appendicitis" is a classic exam descriptor for diverticulitis
  • Low-fiber diet as the primary modifiable risk factor

Key Takeaways

  • Diverticulosis is extremely common in older Western adults and usually asymptomatic — minimal MT modification needed
  • Diverticulitis (inflamed/infected diverticula) presents with LLQ pain and fever — abdominal massage is absolutely contraindicated
  • Low-fiber diet is the primary modifiable risk factor
  • Perforation with peritonitis is a surgical emergency — recognize rebound tenderness and abdominal rigidity
  • Diverticular hemorrhage (painless massive lower GI bleed) is distinct from diverticulitis and requires emergency referral
  • Gentle clockwise abdominal massage is safe and beneficial for uncomplicated diverticulosis

Related Conditions

Sources

  • Werner, R. (2019). A massage therapist's guide to pathology (7th ed.). Books of Discovery.
  • Norris, T. L. (2019). Porth's essentials of pathophysiology (5th ed.). Wolters Kluwer.
  • Tortora, G. J., & Derrickson, B. H. (2021). Principles of anatomy and physiology (16th ed.). Wiley.
  • Rattray, F., & Ludwig, L. (2000). Clinical massage therapy: Understanding, assessing and treating over 70 conditions. Talus Incorporated.
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